Ibm Monochrome Direct Drive Interface And Pin Assignment - IBM 5150 Hardware Reference Manual

•
•
IBM Monochrome Direct Drive Interface
and Pin Assignment
REAR PANEL
9 PIN "0"
SHELL CONNECTOR
~
o
1 • • 6
•
•
: • 9
·
e·C3lW-~~
o
~ 0~
PARALLEL
PRINTER
ADAPTER
At Standard TTL Levels
Ground 1
Ground - 2
Not Used
3
IBM
IBM
Monochrome
Not Used 4
Not Used 5
Monochrome
Display and
Display
....
+
Intensity
6
Parallel Printe
.,
Adapter
....
+
Video 7
""
....
+
Horizontal 8
""
....
- Vertical
9
""
NOTE: Signal voltages are 0 - .6 Vdc at down level
+5 Vdc at high level
2-44